Locomotive.



PATENTED JULY '7, 1903.

-s.N. MIGHBLL.

LOGOMOTIVB. APPLIOATION FILED DBO. 15, 1902.

2 SHEETS-SHEET 1 N0 MODEL.

w www nwxov, Vmwtvm WML No. 732,768. PATENTED' JULY 7. 1903. i s. N. M-IGHBLL;`

LOGOMOTIVB.

PPLIOATION FILED DEO. 15, 1902- z sums-.SHEET 2.

no 'MODEL .U5 Q a 'mi N onms PzYzns co. novo-Mmc, WASHINGTON. n. c4 'Y No. reame.

UNITED STATES PATENT Patented July 7, 1903.

OFFICE.

sEwARD NATHAN MIGHELL, OE CHICAGO, ILLINOIS, AssIGNOR rro MORGAN- GARDNER ELECTRIC-COMPANY, OE CHICAGO, ILLINOIS.

LOGOMOTIVE.

SPECIFICATION forming part of Letters Patent-No. 732,768, dated July 7, 1903. Application filed December 15,1902. Serial No. 135.207. (No model.)

' To all whom t may concern:

Beit known that I, SEWARD NATHAN MIlv GHELL, a citizen of the United States, residing at Chicago, in the county of Cook and State. oflllinois, have invented certain new and useful Improvements in Locomotives, of which the following is al specification.

This invention relates more particularly to electric locomotives, such as are commonly used for mining purposes. These locomotives are usually supplied with yelectricity from a trolley wire or conductor which is more or less permanently secured adjacent to the track. In many instances itbecomes desirable to use a locomotive for short hauls and in runs where it is not considered practicable to install a permanent trolley-wire. vention is designed for such use vand comprises a novel design of locomotivein combizo nation with a flexible electric conductor by means of which it is supplied with electricity and means for reeling up and unreeling the conductor as the locomotive moves along the track. The particular means `of accomplishing these objects are described and claimed hereinafter and are shown in the accom pany: ing drawings, in which- 'A Figure l is a side elevation, partly in section, of a locomotive embodying this invenf tion. Fig. 2 is a fragmentary detail showing the method of supporting the motor.. Fig. 3 is avertical cross-section alsoshowingthe motor-support and the connections betweenv the wheelbearings and the frame. Fig. 4 is a detail showing the Winding-drum and its connection with the axle. Fig; 5 is a vertical cross-section with parts in elevation show-V ing the winding apparatus. Fig. 6 is an en'- larged. detail of the shifting mechanism-forl the friction-disk, showing the disk in engagement with the drum..l a Fig. l7 is a view similar to Fig. 6 with the disk out of engagement. 1 is the frameof the locomotive, which is cut awayjonthe sides at 2 for the journalboxes 3.4 rlhese boxes are provided with upwardly-extending arms 4, which are flanged at the top and provided With rods 5, which slide in lugs or keepers 6 on the sides of the frame 1. Springs 7, interposed between the 5o lugs and the ianges, provide for the yielding This in-` support of the frame. As shown in Figp, thehubsof the wheels 8, which are rigidly securedto the 'axles 9, are the bearing-journals. These may beprovided with bushings 10, as shown, and are slightly cut-away at 11 55 to allow the introduction of waste for lubrication.

The ends of the boxes are closed, as shown, but are tapped, as at 12, for oiling.

The-motor 13 is yieldingly supported from the frame 1 and is geared to the axle 9 in any 6o well-known manner. In order that both sets of wheels may bedriven, they are connected by a sprocket-chain 14, passing over sprocketwheels 15 on the axles. At the end of the frame opposite the motor is awinding-drum 16, secured toa shaft .17, which is supported in bearings in the frame. This drum isv for the purpose of reeling .up and unreeling the flexible electrical conductor 18. A preferred form of conductor is one comprising two wires 7o or cables l9`and 20, insulated from each other and Aalso wrapped toprevent leakage and Wear. The wire 19 is secured tothe flange of the drum at 2l, so that it is in general cirjcuit with the frame of the machine. The '75 other wire is carried through a flanged hub 22, of insulating material, at one end of the drumrand is in contact with a conductor-ring 22a,secured on said hub. An insulated wiper 'or brush 23, carried on an arm 24 from the 8o frame 1, contacts with this ring, and a wire 25 carries the current from thence to the mo torwhere the connections are made in the yusual manner, the return current being through the frame of the machine. As the conductor 18 is wound on the drum it is guided by a reciprocating guide-block 26, Whichis driven by a double-threaded shaft 27, having its trunnions bearing in the-sides ofthe frame 1. `This shaft is driven from the 9o drum-shaft by a chain 28, passing over a sprocket 29 on the drum-shaft anda sprocket 30 on the shaft 27.and.is soltimed that the conductor willbe evenly wound on the drum. Idler-rollers 30 and 31 guide the conductor v95 below a cross-piece at the end of the frame.

An important feature of this invention is the ymeans employed for operating the Winding-drum, whereby the conductor may be reeled up and unreeled in consonance with roo Y the rale of travel of the locomotive at the control of Ithe operator and yet no undue Astrain be placed thereupon. A friction-disk 32 is loosely fitted on the shaft 17, adjacent to the end of the drum 16, and adapted to engage therewith.V On the hub of this disk is a sprocket-wheel 33, which is Vdriven by a chain 34, passing over sprocket 35 on the axle 9. These sprockets are s0 proportioned that the drum may be driven by the disk at a sufficiently-rapid rate to reel up the conductor at the highest rate of speed for the locomotive. The disk is thrown into and ont of engagement with the drum by means of a yoke-lever 36, pivoted at 37 to the frame and extending out to form a handle 3S convenient for the operator. The yoke takes over a collar 39 on a sleeve 40 and engages pins 41 42 on the same, whereby it may be shifted. The sleeve 40 may be flanged and secured to the hub of the disk 32 or may'T be formed integral therewith and has a second flange or rim 43 at the opposite end to engage the collar 39 on the side away from the drum. A spring 44 is interposed between the collar 39 and the flange of the sleeve 40. A disk or plate 45 is rigidly secured to the shaft 17, adjacent to the flange 43 on the end of the sleeve 40, so that a rim on the collar 3f) may be brought into frictional engagement therewith as the lever 3G is swung out.

The operation of this invention is as follows: The conductor being reeled on the drum and the free end in circuit with any desired source of electricity, (not shown,) the motor is started, and as the locomotive moves forward the tension` on the conductor may be relied upon to unwind the drum, or it may be assisted by the throwing the friction-disk into partial engagement. In case the locomotive is stopped somewhat suddenly there may be a tendency of the drum to spin and unwind more of the conductor than desired. This is overcome by pressing out on the lever-handle 38, which causes the rim of the collar 39 to engage the disk 45 and act as a brake on the drum-shaft. lVhen the locomotive has reached the end of the conductor and the return trip to be made, the operator presses in on the lever-handle and throws the friction-disk into engagement with the drum, and as the motion of the disk is reversed with the motion of the locomotive the conductor is again wound up. As the drum becomes filled the conductor will be wound more rapidly on account of the increased diameter; but this is compensated for by the apparatus slightly releasing the pressure on the lever and allowing a slipping between the disk and the drum. The spring 44, which at all times makes the engagement between the disk and drum somewhat yielding, will allow a slippage in case of any undue strain on the conductor. The operation of the other devices is either well known or apparent and will be omitted.

I do not desire to limit this invention to the precise form of construction shown; but

lVhat I claim, and desire to secure by Letters Patent, is-

1. Alocomotive,aconductorwinding-drum on said locomotive, a disk adjacent to said drum and adapted to engage therewith to cause said drum to revolve, means for driving said disk and means for forcing it into yielding engagement with said drum. t

2. An electric locomotive, a shaft having bearings in the frame thereof, a conductor Winding-drum on said shaft, a friction-disk mounted on said shaft adjacent to one of the heads of said drum, means for driving said disk, a sleeve on said disk, a collar on said sleeve, a spring interposed Vbetween said collar and a shoulder on said disk, and a lever whereby said collar may be shifted.

3. In an electric locomotive, a conductor winding-drum secured to a shaft, a reciprocating conductor-guide adjacent to said drum, means for operating said guide from said shaft, a friction-disk mounted on said shaft adjacent to one head of the drum and adapted to engage therewith, means for driving said disk, a sleeve on said disk, a collar mounted on said sleeve, a rim on said sleeve to engage the collar as it is pressed away from the disk, a spring interposed between said collar and a shoulder on said disk or sleeve, a lever pivoted to the frame of the locomotive and engaging said collar whereby said collar may be pressed toward or away from said disk.

4. In an electric locomotive, a windingdrum on a shaft, a friction-disk on said shaft, means for driving said friction-disk, a sleeve on said disk, a collar on said sleeve adapted to shift said disk into and out of engagement with said drum, a lever for shifting said collar, a second friction-disk rigidly secured to said shaft and adapted to engage said collar as a brake, when the lever is thrown out to discngage said first-named friction-disk from the drum.

5. In an electric locomotive, a winding drum on a shaft, an electric conductor comprising two insulated wires, one'wire being grounded to said drum, the other wire passing through an insulating-hub on said drum and contacting with a metallic ring on said hub, an insulated wiper engaging said ring and an electric conductor leading from said wiper to the motor of the locomotive.

G. In an electric locomotive, a windingdrum on a shaft, afriction-disk on a sleeve on said shaft, a sprocket on said sleeve, a chai-n engaging said sprocket and a sprocket on the axle of the locomotive, acollaron said sleeve adapted to shift said disk into and out ofengagement with said drum, a second frictiondisk on said shaft adapted to be engaged by said collar as it is shifted to disengage said first-named disk from the drum to act as a brake on said drum, a lever for shifting said collar, a double electric conductor having one IOO IIO

IZO

Wire grounded to said drum, the other in contact with an insulated ring on said drum, means for conducting electricity from said ring to the motor, and means operated from said drum-shaft for automatically guiding the conductor as it is wound on or unwound from the drum.

7. In combination, a frame, Wheels mounted on an axle, journalbearings for said wheels closed over the ends of said journals, recesses in the ends of said journals for lubricant, slots in said frame for said bearings, upwardly-extending arms from said bearings, having shoulders or flanges. thereon, rods ses j es from said arms engagingwith lugs or keepers on said frame and springs interposed kbe. 

